Refactor let_and_return for sender_identity

Upgrade Cargo version to 2024, and remove windows-11-arm from CI.

Add Cargo .idea exclude

Cleanup README.md and uv.lock

Update CI.yml

Update CI.yml

Update CI.yml

Update CI.yml

Update CI.yml

Correct CI.yml

Remove --system arg.

Combine CI and Python.yml, and replace pip with uv.

Redo Maturin .yml lib reference.

Redo .yml files for Maturin delegation.

Remove a space on import.